Delete row ('1553', '20689') from daily_volatility

ticker_id 1553
day 20689
implied_open 0.8873849897310637
implied_high 0.9254838086103938
implied_low 0.8715104818646762
implied_close 0.8778602850112313
historical_open 0.9365959641168651
historical_high 0.9365959641168651
historical_low 0.9365959641168651
historical_close 0.9365959641168651
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